4 papers
The MESS of the CMB
Manuel Alejandro Jaramillo Rodrguez, Antonio Enea Romano, Sergio Andres Vallejo-Pena
We analyze cosmic microwave background (CMB) data taking into account the effects of a momentum dependent effective sound speed (MESS). This approach allows to study the effects of…
Coordinate independent approach to the calculation of the effects of local structure on the luminosity distance
Sergio Andrés Vallejo-Peña, Antonio Enea Romano
Local structure can have important effects on luminosity distance observations, which could for example affect the local estimation of the Hubble constant based on low red-shift ty…
Are primordial black holes produced by entropy perturbations in single field inflationary models?
Sergio Andrés Vallejo-Peña, Antonio Enea Romano
We show that in single field inflationary models the super-horizon evolution of curvature perturbations on comoving slices , which can cause the production of primordi…
The effects of anisotropy and non-adiabaticity on the evolution of comoving curvature perturbation
Atsushi Naruko, Antonio Enea Romano, Misao Sasaki +1
We derive the equation for the evolution of the curvature perturbation on the comoving time slice, , in the presence of anisotropic and non-adiabatic terms in the en…